Modifying Web Content at a Client

1. A system for producing a modified document object model structure, comprising: a processor configured to: request a desired webpage; receive in response to the request an alternative webpage that is an alternative version of an original version of the requested desired webpage, wherein the alternative webpage does not include all of the contents of the original version of the requested webpage; process the alternative webpage; use program code included in the alternative webpage to request the original version of the desired webpage; receive the original version of the desired webpage; and produce the modified document object model structure different from an original document object model structure corresponding to the received original version of the desired webpage; and a memory coupled to the processor and configured to provide the processor with instructions.

2. The system of claim 1 , wherein producing the modified document object model structure includes modifying the original document object model structure.

3. The system of claim 1 , wherein producing the modified document object model structure includes modifying the received original version of the desired webpage.

4. The system of claim 3 , wherein producing the modified document object model structure includes adding to the modified document object model structure, objects of the received original version of the desired webpage that has been modified.

5. The system of claim 1 , wherein the alternative webpage includes a portion of contents of the original version of the desired webpage.

6. The system of claim 1 , wherein the program code included in the alternative webpage includes JavaScript.

7. The system of claim 1 , wherein the program code implements a virtualization client.

8. The system of claim 1 , wherein the request for the desired webpage is provided to an edge server of a content delivery network.

9. The system of claim 1 , wherein the alternative webpage includes a location address of the original version of the desired webpage.

10. The system of claim 1 , wherein producing the modified document object model structure includes replacing a network location address of a resource of the original document object model structure with a different network location address.

11. The system of claim 1 , wherein a modification to the original document object model structure to produce the modified document object model structure was selected based on a web browser type of a client system.

12. The system of claim 1 , wherein producing the modified document object model structure includes replacing a domain name of a network location address of a resource of the original document object model structure with a different domain name.

13. A method for producing a modified document object model structure, comprising: requesting a desired webpage; receiving in response to the request an alternative webpage that is an alternative version of an original version of the requested desired webpage, wherein the alternative webpage does not include all of the contents of the original version of the requested webpage; processing the alternative webpage; using program code included in the alternative webpage to request the original version of the desired webpage; receiving the original version of the desired webpage; and using a processor to produce the modified document object model structure different from an original document object model structure corresponding to the received original version of the desired webpage.

14. The method of claim 13 , wherein producing the modified document object model structure includes modifying the original document object model structure.

15. The method of claim 13 , wherein producing the modified document object model structure includes modifying the received original version of the desired webpage.

16. The method of claim 15 , wherein producing the modified document object model structure includes adding to the modified document object model structure, objects of the received original version of the desired webpage that has been modified.

17. The method of claim 13 , wherein the alternative webpage includes a portion of contents of the original version of the desired webpage.

18. The method of claim 13 , wherein the program code included in the alternative webpage includes JavaScript.

19. The method of claim 13 , wherein the program code implements a virtualization client.

20. The method of claim 13 , wherein the request for the desired webpage is provided to an edge server of a content delivery network.

21. The method of claim 13 , wherein the alternative webpage includes a location address of the original version of the desired webpage.

22. The method of claim 13 , wherein producing the modified document object model structure includes replacing a network location address of a resource of the original document object model structure with a different network location address.

23. The method of claim 13 , wherein a modification to the original document object model structure to produce the modified document object model structure was selected based on a web browser type of a client system.

24. The method of claim 13 , wherein producing the modified document object model structure includes replacing a domain name of a network location address of a resource of the original document object model structure with a different domain name.

25. A computer program product for producing a modified document object model structure, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for: requesting a desired webpage; receiving in response to the request an alternative webpage that is an alternative version of an original version of the requested desired webpage, wherein the alternative webpage does not include all of the contents of the original version of the requested webpage; processing the alternative webpage; using program code included in the alternative webpage to request the original version of the desired webpage; receiving the original version of the desired webpage; and producing the modified document object model structure different from an original document object model structure corresponding to the received original version of the desired webpage.